12V Lithium Ion Batteries - 72V Lithium Ion Batteries. This product last 10X Longer then lead acid batteries. 99.1% Efficient. 70% Less Weight, Zero Maintenance! My current customers are the US Military and the US Consumer Market. This product sells itself. Exclusive relationship directly with the factory overseas. Military, Motorhomes, Golf Carts, Solar Backup, Marine. The opportunities are endless.